Sterile, antimicrobial preservative acts as an algaecide, bactericide and fungicide. This bacteriostatic water preservative is designed for use in self-contained, emergency eyewash stations including the First Aid Only HAWS 15-minute Portable Eyewash Station M7501. One 5 oz. (148 mL) bottle will preserve 5 to 20 gallons of portable water for up to three months with a shelf life of up to two years.